Car washing brush

ABSTRACT

Bristle-holding channels spiralled around a hollow cylindrical core are held in spaced turns by peening the core to deform the portions of the core between the turns outwardly to create a rib portion positioned between the turns of the channel. In another embodiment, an adhesive in unhardened state is placed on a core in beads extending along the core and a channel is then wound tightly on the core forcing the adhesive out from under the channel, and to form spacing ribs between the turns of the channel, and the ribs are then hardened.

United States Patent 1191 [111 3,763,516 Welter Oct. 9, 1973 CAR WASHING BRUSH 3,193,866 7/1965 Jones 15/182 Inventor: J R. Welter, a c r was 3,439,373 4/1969 Clark 15/182 [73] Assignee: Daniel C. Hanna, Portland, Oreg. Primary Examiner-Peter Feldman Attorney-Stephen W. Blore et al. [22] Filed: Oct. 15, 1971 [21] Appl. No.: 189,538 [57] ABSTRACT Bristle-holding channels spiralled around a hollow cy- 52 U.S. c1. 1s/1s2 hhdrical core are held in Spaced turns by Peening the 51 1111. c1. A46b 7/10, A46d 1/00 core defmm the core between the [58] Field of Search 15/179, 180, 18 1, utward1y create a rib PSitihed 15/182 183 tween the turns of the channel. In another embodiment, an adhesive in unhardened state is placed on a [56] References Cited core in beads extending along the core and a channel is then wound tightly on the core forcing the adhesive UNITED STATES PATENTS out from under the channel, and to form spacing ribs sBctlillleg et al. between the turns of the channel, and the ribs are then a at 2,782,439 2/1957 Ballard 15/182 hardened 2,783,095 2/1957 Ballard 15/182 X 3 Claims, 5 Drawing Figures CAR WASHING BRUSH This invention relates to car washing brushes, and more particularly to improved spiral brushes.

Another object of the invention is to provide new and improved car washing brushes.

Another object of the invention is to provide new and improved spiral brushes.

A further object of the invention is to provide a spiral brush having a hollow core in which a spiral rib is spun outwardly between spaced turns of a spiral bristleholding member on the periphery of the core.

Another object of the invention is to provide a brush having a cylindrical core with a bristle-holding member spiralled on the core in spaced turns and bunching an adhesive bead into spacing segments between the turns.

In the drawings FIG. I is a side elevational view of a brush forming one embodiment of the invention;

FIG. 2 is a plan view taken along line 2-2 of FIG. 1;

FIG. 3 is a fragmentary sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a fragmentary sectional view taken along line 44 of FIG. 2; and,

FIG. 5 is a fragmentary, vertical sectional view of a brush forming an alternate embodiment of the inventron.

Referring now in detail to the drawings, a wraparound brush (FIG. 1) forming one embodiment of the invention and of a general type used in automatic car washes, is supported in its operating position to cleanse the side of a vehicle 12. The brush is supported and rotated by a drive shaft 14 through a coupling 16 whose center hub 18 has a tapered bore 20 to receive a taper-lock bushing 22. Flange 24 of the bushing is drawn down by the bolts 26 to tighten or wedge the bushing in the bore 20 to lock the assembly onto the drive shaft 14. Both ends of the core 28 have identical hubs 30 and 31 welded to inside face 32 of a thin wall metal tube or cylinder 34, the hub 30 being attached to a coupling 38 by capscrews 40 screwed into bores 42. It can be seen by this design that the cores 10 may be reverse ended due to greater wearing of one end of the brush, by thereby adding additional life to the brush. This hanging design also has an advantage over present through-shaft mounted brushes, by being able to change the brushes rapidly, simply by loosening the screws 40 and slipping the brush 10 off. This reduces down time for the car wash.

Brush bristles 50 are clamped in a bristle-holding channel or bead 52, which is tightly wound on the cylinder 34 in an even helix or spiral with adjacent turns of the channel uniformly spaced apart, the wall of the cylinder 34 being perfectly cylindrical at this time. The end portions of the channel are secured to the cylinder by welding or clamps. Then a spinning head (not shown) of the flail or peening type is moved into the cylinder and the cylinder is peened to form an outwardly protruding bead or rib 56 between the adjacent turns of the channel, and the rib locks the turns of the channel against moving along the cylinder 34, which preferably is of aluminum.

EMBODIMENT OF FIG. 4

A brush 60 forming an alternate embodiment of the invention is identical to the brush 10 except that an adhesive 54 is applied to core 34 before the channel 52 is wound on the core and secured to the core, the adhesive serving to hold the turns of the channel in place.

EMBODIMENT OF FIG. 5

A bush forming an alternate embodiment of the invention is like the brush 10 except that a tubular core or cylinder 74 is not peened or spun and adjacent turns of a bristle-holding channel or bead 52 are held in spaced positions by hardened adhesive ribs or beads 76. In forming the brush 70, the adhesive for the beads 76 is applied to the cylinder 74 in the form of beads or ribs extending along the cylinder and spaced around the cylinder. The channel 52 is wound tightly on and secured to the cylinder and squashes the unhardened adhesive into the beads or ribs 76. The adhesive then is hardened to positively space the turns of the channel apart. The adhesive is preferably of the air curing type, and may be a rubbercement or a caulking compound.

What is claimed is:

1. In a car washing brush,

a cylindrical core,

a channel-like bristle-holding member secured to the periphery of the core in an open helix,

and spacer means engaging portions of the adjacent turns of the member to space them apart and comprising an adhesive securing the member to the core, the adhesive being in the form of a bead extending longitudinally relative to the core and being thickened between adjacent turns of the bristle-holding member.

2. The car washing brush of claim 1 wherein the adhesive is a hardened caulking compound.

3. In a car washing brush,

a generally cylindrical tubular metal core,

and a channel-like bristle-holding member secured to the periphery of the core in an open helix,

the helical portion of the core engaged by the bristleholding member being flat transversely to the helix, the helical portion of the core not engaged by the bristle-holding member being belled or convex outwardly and concave inwardly transverse to the helix so as to space apart the adjacent turns of the member, the core being substantially uniform in thickness throughout. 

1. In a car washing brush, a cylindrical core, a channel-like bristle-holding member secured to the periphery of the core in an open helix, and spacer means engaging portions of the adjacent turns of the member to space them apart and comprising an adhesive securing the member to the core, the adhesive being in the form of a bead extending longitudinally relative to the core and being thickened between adjacent turns of the bristle-holding member.
 2. The car washing brush of claim 1 wherein the adhesive is a hardened caulking compound.
 3. In a car washing brush, a generally cylindrical tubular metal core, and a channel-like bristle-holding member secured to the periphery of the core in an open helix, the helical portion of the core engaged by the bristle-holding member being flat transversely to the helix, the helical portion of the core not engaged by the bristle-holding member being belled or convex outwardly and concave inwardly transverse to the helix so as to space apart the adjacent turns of the member, the core being substantially uniform in thickness throughout. 